How many moles of hydrogen would be need to completely hydrogenate two moles of arachidonic acid (shown below)in the presence of a Ni catalyst? CH₃(CH₂)₄(CH=CH₂)₄(CH₂)₂COOH A)1 mole H₂ B)4 moles H₂ C)2 moles H₂ D)8 moles H₂

Question

Quizplus · Accepted Answer

Arachidonic acid has 4 double bonds. To hydrogenate one mole of a compound with one double bond, you need 1 mole of hydrogen. Therefore, to hydrogenate two moles of arachidonic acid, you need 4 moles of hydrogen per mole of arachidonic acid, totaling 8 moles of hydrogen.

How Many Moles of Hydrogen Would Be Need to Completely